Bobbin-stripping device.



A. BHO/mis. BOBBIN STRIPPING DEVICE.

APPLICATION FILED DEC. 27, 1913.

L183J16, l PmwmdMwamm.

3 SHEETS-SHEET l.

Inventor.

W'fnesses. l I j oAIongo E. Rhoades, g whwwmmm A. E. RHODES. BGBBINV STRIPPING DEVICE.

Y:APPLICATION FILED DEC. 27, 1913.

Patented May 16, 1916.

3 SHEETS-SHEET 2- THE COLUMBIA PMNOGRAPH co.. WASHINGTON. n. a.

A. E. RHOADES.

BOBBIN STRIPPING DEVICE. v APPLICATION FILED DEc.21. I9Ia.

1,183,1 16. A Patnted My16,1916.

3 SHEETS-SHEET 3.

Winesses. lnvenor. v y. MEM/L Anm@ ERhwdeS, d/fwwz/ byiwdww Anys.

THE COLUMBIA PLANQGRAPH C0.. WASHINGTDN, D. C.

UNITED sTATEs rnTENT oEErcE.

.ALONZO E. RHOADES, OF HOPEDALE, MASSCI-IUSTTS, .ASSIGNOR T-ODRAPR COM- PANY, OFHOPEDALE, IYIASSAVCHUSETTS,A CORPORATION OF MAINE,

BOBBIN-STRIPPING DEVICE.

specincation of Letters ratent.

ratentemiay 1e, 1916.

Application led December 27, 1913. Serial No. 809,107.

To all whom it' may concern Be it known that I, ALONZO E. RHOADES, a citizen of the United States, and resident of Hopedale, county of lYorcester, State of Massachusetts, have invented an Improvement in Bobbin-Stripping Devices, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representinglike parts. e. i

rEhis invention has for its object the production of .Y apparatus for stripping the waste yarn from bobbins after they are removed from the loom shuttle and prior to the return of the bobbin to the spinning frame for the reception of fresh yarn masses.

This invention is an improvement of prior mechanisms devised by me and made the subject of Patent No. 1,097,942, dated May QG, 1914, and also the subject of Patent No. 1,097,943 dated May 26, 1914.

The objects irr these inventions is more perfectly to secure the complete removal of the waste and enable it to loe done by a single passage of the bobbin through the apparatus.

One object provide for of the present invention Vis to automatically supplying the bobbin to the apparatus and eliminating the requirements for any skill on the part of the operative in placing-the bobbin inistripping position, and enabling the speed of the apparatus to be materially increased with the assurance that a. hobbin will always be in position for stripping. In the present form of the invention this result is secured by the provision of a hopper or chute and a transferring device which automatically acts to transfer the bobbins successively from the hopper or chute to the carrier disk b v which thev are carried into, and held in, stripping position.

Another feature of the invention resides in the construction and operation Vof the stripping elements.

This invention provides a pair of yieldin?.` stripper jaws s o constructed as substantially to surround the bObbin barrel thus eaualizing the pressure throughout and instripped completely and cleanly from the bobbin, because if any waste is left 0n the bobbin the stripping operation in some form must be repeated until the bobbin is thoroughly cleaned, but each repetition of the stripping or cleaning operation materially adds to the expense.

This invention also provides as one feature thereof means whereby the yielding stripper jaws are automatically opened prior to their seizure of the bobbin barrel at the butt end, and are also automatically opened at `the conclusion of their stripping movement to enable them to' retire from the bobbin. barrel by a movement relatively and radially thereof. Y

The inventionalso provides two stripper devices both of which are provided with yielding aws., theV first of these devices act-v ing as the stripper proper and the second as a clearer, but both stripping the barrel of the bobbin yieldingly so that the removal of the waste 'is insured completely and cleanly.

Y The invention also involves other novel features whereby the apparatus set forth in my prior'patents is simplied and rendered more eflicient in its Operation.

These features of my invention will appear more fully'from the accompanying dei tures immediately connected with the oarrier, but with parts omitted and broken away. i 1

In the construction illustrated the working parts ofthe apparatus are mounted on a flat and substantially rectangular base l, supported at a suitable height on legs 2. .An'upright'bracket 3 is bolted tothe base 1. at the rear thereofand is provided with an elongatedtransverse bearing 4 for the main shaft 5. The main shaft carries at its outer end the fast and loose pulleys 6 and 7 and is provided with the pinion 8 meshing with and driving the gear 9 on the power shaft 10. This power shaft 10 is likewise supported in a transverse bearing 11 formed in the upright bracket 3 and parallel with the bearing 4.

The bracket 3 has fixedly secured to it laterally extended guide rods 12 and 13, one above the other, the rod 12 having slidably mounted upon it the hub 14 of a belt fork y15 by means of which the driving belt (not shown) is shifted from one to the other pulley. In the drawings the fork is shown in position to maintain the belt on the fast pulley 6. A forked arm 16 is rigidly attached to and extends from the hub 14 of the belt fork and embraces the lower guide rod 137 thus preventing any rotative movement of the hub and the belt fork on the main guide rod 12. l

The base 1 also supports at the rear brackets 17 and 18 having alined bearings which support the horizontal shipper shaft 20. The shaft 2O has at the front or left hand end a shipper 21 fixedly secured to it and within convenient reach of the operator. An arm 22 rigidly secured to the shipper shaft 2O extends upwardly therefrom and engages the shank of the forked arm 16 of the belt fork so that when the shipper shaft is rocked the belt' fork 15 will be moved to shift the driving belt as desired. The shipper shaft is shown as surrounded by a coiled spring 23 which normally acts to turn the shaft to stopping position. This action 1s prevented when the apparatus is running but is automatically allowed to take place whenever a bobbin is improperly positioned in the carrier by means which will hereinafter be described in detail. The base 1 also supports at the front of the apparatus alined brackets 24 and 25 in which is supported rigidly a horizontal shaft 26 which projects well beyond the left hand or front end of the base.

A bobbin carrier 27 of construction generally similar to that illustrated in my before-mentioned prior patents is mounted for rotation on the shaft 26 and is provided at its rear or right hand side with vthe ratchet 28 by means of which its rotation is intermittently secured. A pawl carrier 29 having an extended sleeve-like hub 30 is journaled on the shaft 26 between the bracket 25 and the ratchet 28 and has pivotally mounted thereon the pawl 31 held up against the ratchet by the coil spring 32. The pin or shaft 33 in the pawl carrier 29 upon which the pawl 31 is mountedhas also pivotally mounted thereon and depending therefrom an arm 34. This arm 34y is operated by a bell crank lever to be described so that the required oscillating movement is given to the pawl carrier to advance the bobbincarryin'g disk.

The circular bobbin carrying disk 27 is provided with suitable bobbin-holding devices for the bobbin butts as in my prior patents. These devices may be as therein illustrated, and hence are not herein described in detail. It is not necessary to illustrate each one because they are all of the same construction. Each is shown as comprising a fixed jaw 35 and a coperating, pivoted or movable jaw 36 pivoted on the disk 27, andyieldingly held toward its coperating fixed jaw, as described in my prior patent. The depending end 37 of each yielding jaw is arranged to rest upon the periphery of a c^ntrolling cam 38 mounted on and rotarilv adjustable on the shaft 26. This cam is so shaped and adjusted as to produce sufficient pressure between the jaws to hold the bobbin but without causing undue friction; then while the bobbin is in the eld of the strippers to increase the pressure to hold the bobbin rigid while being stripped; and finally to release the pressure entirely when the bobbin is ready for discharge from the apparatus.

The tips of the bobbins are supported by and slide upon a segmental tip support 39 having a flange 40 to serve as an abutment or stop against outward or longitudinal movement of a' bobbin particularly when the main stripping device is acting upon the waste. This tip support is fixedly mounted on the shaft 26 through the hub 41 and is so positioned that after the action of the main stripping device is completed the next feed movement of the carrier will remove the tipy of the bobbin therefrom and bring it into the field of operation of the iinal stripping device or clearer. An auxiliary bobbin rest 42 is provided to sustain the bobbin during the action of the clearer and is located just beyond the end of the tip support 39 but much'nearer the disk 27 so that this rest engages the barrel of the bobbin back of the waste loosened by the main stripper. This rest 42 is adjustable radially and rotarily with respect to the shaft 26 upon which it is supported.

The stripping mechanism is supported from the brackets 25 and 3 which for that purpose have laterally extended flanges or heads 43 and 44 upon which is bolted an elongated horizontal casting 45. This casting is provided with a longitudinal guideway formed by the guides 46 and 47 in which is mounted a long slide bar or carriage 48. This carriage has near its forward end a rigid upright bracket 49.1, The operation of the bobbin carrier is secured by a connection between the pawl-carrier and this bracket. A pin 50 projects laterally forward from the bracket 49 kand embraces the slotted end of the long arm 51 of a bell crank lever 52, the shorterarmy 53 of which is likewise slotted and embraces the depending arm 34 already described by engaging with a pin 54 projecting laterally forward from said arm 34. The bell crank lever 52 is fulcrumed at 55 on a yshaftor pin projecting from the bracket 25. It will thus be seen that at each forward reciprocation of the carriage 48 carrying the stripping mechanism the pawl 31 will be moved backwardly over the ratchet 28 but during each reciproca-tion of the carriage to the right or rear at the conclusion of the stripping operation the pawl 31 will be moved forwardly to advance the ratchet and consequently the bobbin carrier one step.

The bobbins are automatically7 supplied to the carrier from a hopper or chute, and in the construction illustrated are transferred from this hopper or chute to the bobbin carrier by a transferring device or means controlled by or through the means for rotating the carrier so that all the attendant has to do is to place the bobbins in the hopper or chute.

The hopper or chute is shown at 56 as an elongated box of just sufficient width to hold and guide the bobbins in series one after the other. It may be obviously of any length and the upper portion may be enlarged. The only requirement is that the bobbins as they approach the lower end of the chute 56 lie one on top of the other with the butt end to the right and the tip end to the left. This chute 56 is shown vas supported on and secured to a bracket 57 projecting forwardly from and secured by bolts 58 to the face of the base 1 so that the hopper or chute is held in position with its lower end or mouth closely adjacent to the bobbin carrier.

A pivoted gate is mounted in the bottom of the hopper or chute 56 to support the lowermost bobbin therein and prevent it from passing out of the chute until the gate is swung aside. This gate also serves to-guide and direct the passage of the bobbin from the chute into the jaws of the carrier disk and against the tip support. This gate is shown as comprising the shaft 59, and mounted in bearings 60, the arms 61 and 62 of quite a different length and arranged at different angles so that the bobbins will be supported horizontally, the arm 62 supporting the butts of the bobbins and the arm 61 the tips. The arm 62 will guide the butt between the jaws 35 and 36, and the arm 61 will guide the tip onto the tip-support 39. A coiled spring 63 on the shaft 59 servesto maintain the gate in its upward position holding the bobbin in the chute 56.

The transfer of the bobbins from the chute to the carrier disk is effected automatically and successively at each movement of the carrier by a transferring device. vThis device in the form illustrated comprises a head 64 properly shaped at its forward end to engage the bobbin near the butt and near the tip, and carried by an arm 65 pivotally mounted on a shaft 66. The shaft 66 is rigidly secured in a bearing bracket 67 projecting from the bracket 57 and preferably formed integrally therewith. An arm 68 is also pivotally mounted on the shaft 66 and projects rearwardly and is connected by a link 69 with the pin 54 already described. This connection is necessarily of a universal character in order to'take care of the peculiar movement which occurs. It is shown as a swivel piece 70 pivotally mounted in the end of the link 69 and transversely pivotally mounted on the pin 54. The arms 68 and 65 are connected by a strong coiled spring 71 so that the arms 68 and 65 constitute normally a bell crank lever. It will thus be seen thatv as the bell crank lever 51 is operated from the stripper carriage, it will through the connections already described operate the transferrer 64, and this operation will take place at each movement of the stripping mechanism. The spring 71 is provided so that if the transferrer 64 meets with any obstruction such as an improperly placed bobbin in the hopper, it will give and prevent a smash. The lower end of the hopper is cut away or slotted at the front to allow of the passage of the transferrer thereinto, and is properly shaped on the opposite face to allow of the discharge of the bobbins therefrom. As the transferrer lcomes into contact with the lowermost bobbin which is then resting upon the pivoted gate, it moves the bobbin forwardly thus swinging the gate downwardly into a position causing 61 and 62 to guide the tip and butt of the bobbin into position on the carrier disk and bobbin support. During this transferring laction the transferrer operates to hold up the remaining bobbin in the chute and as it moves backward and withdraws from the chute the pivoted gate swings back into place, thus holding the remaining bobbin in the chute.

The movement of the carrier disk in a reversed direction is prevented, or the disk is held against any movement save that imparted yto it by the feeding pawl, by a suitable brake such as shown in Fig. 3. For this purpose a plate 71 is bolted to the base 1 and has pivoted thereon at 72 a brake shoe 73 held yieldingly against the rim of the disk by a coiled spring 74. The pressure on the brake is adjusted by means of a set screw 75 passing through a iange 76 on the plate 71, and abutting against the cap V77 of the spring. l

The stripping mechanism comprises two stripping devices. The main stripping device is provided with a pair of yieldingly closed jaws acting when closed substantially to surround the bobbin'barrel. In the operation of the machine when the bobbin is brought into position by the disk opposite the main stripper device, this device is moved downwardly with the jaws open, and then the jawsclose tol surround the bobbin barrel near the butt and behind `the mass of waste. The stripper device then moves forwardly and the yielding jaws gripping the bobbin barrel the waste is pushed off toward the tip. Thus ythe waste is acted upon substantially uniformly around the bobbin barrel and the pressure is evenly applied thereto. At the end of this stripping operation the jaws are opened and the stripper device rises and returns. The carrier disk then rotates one step bringing a fresh bobbin beneath the main stripper vdevice and the bobbin already acted upon by the main stripper device into position beneath the second stripper device or clearer. This clearer is likewise provided with a pair of yielding jaws, but as its rfunction is chiefly to remove the waste already loosened and stripped its jaws do not entirely surround the barrel of the bobbin. This clearer device drops into place on the bobbin barrel to the left of the support 42 and pushes the loosened waste off over the tip. Its jaws yieldingly close against the bobbin barrel, thus preventing any waste adhering thereto and clearing the bobbin thoroughly and cleanly.

Both stripper devices are supported from the bracket 49 on the carriage 48. A fulcrum rod 78 is carried by this bracket, and both stripper devices are fulcrumed thereon. The main stripper device comprises an arm 79 pivoted on the fulcrum rod 78, and provided with a head 80. The yielding aws 81 are of similar construction and shape, and are pivoted at 82 on opposite sides of the head 80. The lower ends of the yielding jaws 81 are oppositely recessed so that when in closed position on the bobbin barrel they substantially surround the barrel. At their upper ends the yielding jaws are normally closed by a spring 83, and are each provided with upwardly projecting pins 84.

The second stripper device or clearer comprises an arm 85 pivoted at its rear end on the fulcrum rod 78, and provided at its forward end with a head 86. A pair of jaws 87 of similar shape and construction are pivoted at 88 on opposite sides of the head 86, and are normally closed by a spring 89 between the upper ends. he second stripper device or clearer receives its up and down movement from the main stripper device. For that purpose an arm 90 projects from the arm 85 and rests upon ythe arm 79 of the main stripper, being held in place by a strap 91 thereon.

The main stripper device forward or at the left of the fulcrum rod 78 is provided with an upwardly projecting bracket 92 and at the rear or right of the fulcrum rod 7 8 with a downwardly projecting tail 93 which when the main stripper is in its elevated position contacts with the bracket 49. A link 94 is pivoted to the bracket 92 at its forward end 95 and at its rearward end is pivoted at 96 to a crank disk 97 carried by the power shaft l0.

The opening and closing of the yielding jaws 81 of the main stripper device is accom Ylished by a pair of opener guides, one fixe in position and the other movable radially of the bobbin. In the construction illustrated a bracket plate 98 is bolted to the base l, projects upwardly therefrom, and eX- tends over the stripper devices and forward parallel thereof, as shown at 99. The fixed opener guide 100 is bolted to the bottom of the plate 99, and at its forward end is provided with a V-shaped recess 101, the walls of which diverge outwardly as shown in Fig. 2. The plate forming the fixed opener guide 100 beneath the portion provided with diverging walls 101 is cut away to the full width of the widest portion of the diverging walls so that parallel flanges 102 are presented. The movable opener guidegcomprises a frame or plate 103 presenting a recess having inclined walls 104 converging outwardly or to the left from the end of the diverging walls 101, and this frame 103 is pivoted at 104 to the fixed opener guide 100 and is provided with a rearwardly projecting tail 105 to limit its downward pivotal movement.

The operation of the stripper device will now be apparent. lVhen the stripper devices are in their retracted or right hand p0- sition the pins 84 of the main stripper device will be between the` walls 101 of the fixed opener guide, and at the 4rear or right hand end thereof, so that the yielding jaws will be held open and the tail 93 will be held against the bracket 49 by the pull on the link 94. When a bobbin to be. stripped comes in position the rotary movement of the crank disk 97 carries the link 94 forward. This results first in `depressing the main strip-per, causing the yielding jaws to drop over the barrel of the bobbin near the butt and behind the waste. As the jaws come into position the pins 84 withdraw from the opener guide and spring apart between the flanges 102, the jaws then gripping yieldingly the bobbin barrel. The continued rotary movement of the disk 97 carries the main stripper and with it the entire carriage 48 forwardly or to the left, and the waste is stripped along the bobbin as already described. As the stripper travels along the pins 84 ride between the inclined walls 104 of the movable opener guide which has dropped by gravity into the position shown in Fig. 1. As a result at the end of the outward movement of the carriage the pins 84 acting against the walls 104 have opened the yielding jaws and freed them from the bobbin barrel. As the crank disk 97 passes the dead center the first action is to raise the main stripper bringing the tail 93 again into contact with the bracket 49. As the stripper rises it: carries with it the movable or pivoted opener guide. Upon the continued retracting movement of the main stripper and carriage the pins 84 riding into the wide mouth of the pivoted opener guide allow the pivoted opener guide to drop by gravity into its lowermost position shown in Fig. 1 but the pins pass directly therefrom between the walls 101 of the fixed opener guide converging in the opposite direction so that at the end of the rearward movement of the main stripper the yielding jaws are open and the parts have then returned to the position at which they started. Meanwhile, of course, the second stripper-device or clearer has been traveling along and up and down with the main stripper by reason of the means already described,

It is important as in the case of my prior patents referred to that the stripping devices are brought into contact with the bobbin before or immediately the stripping action begins and'elev'atedVY from the bobbin before or immediately the retracting movement begins. This operation is insured by a means by which friction is employed so that the movement of the carriage 48 in either direction will not take place until the proper downward or upward movement of the strippers takes place. InV the construction illustrated this result is secured as follows: The plate 45 is extended laterally to the front and is provided with two upwardly projecting pins 107, 108, upon which is mounted an arm 109 arranged transversely to the carriage 48. The:V rear end of the arm 109 is providediwith afsuitable friction detent such as a friction pad 110 bearing upon the top of the carriage. The friction is regulated by a coiled spring 111 surroundingV the pin 109 bearing upon the arm 109 and adjustedl by the check nuts 112. The friction on the carriage may consequently be increased by raising the forward end of the arm 109, and this is done at the required times by a cam slide connect- A ed to and moved with the carriage. This cam slide is shown at 113 as a bar guided at its right hand end by a flange 114 on the projection 106 and having its upper surface cam-shaped at 115 where it rides beneath the arm 109. At its -left hand end the bar 113 is adjustably connected by the screw end 116 and the check nuts 117 with a lug 118 depending from and rigidly secured to the bracket 49. This construction relieves the carriage 48 of unnecessary friction during the stripping action, the friction at that time being sufficient only to prevent lost motion. When, however, the stripping devices are to be brought down into contact with the bobbins or when they are-to be elevated from the bobbins the cam slide b ar acts upon the arm 109 and materially increases the frictionbthus insuring the downward or upward movement of the stripping devices. Provision is had as in the case of the machines of my previous patents for stopping the apparatus in the case of a mispositioned bobbin in the carrier. For this purpose a detent 119 is mounted on a shaft 120 in bearings 121 projecting from the plate 45 and engages a pin 122 on the shipper handle 21. This detent is held normally upward in engagement with the pin 122 and may be depressed by hand, or in the case of a mis-positioned bobbin is automatically depressed by a releasing arm provided with a convex shoe 123 connected to the hub 124 also mounted on the shaft 120 and overhanging the disk andthe butts of the bobbins supported thereby. A iange 125 connected to athe shoe acts as a counterweight and serves to maintain the detent 119 normally elevated. If a bobbin has been improperly positioned so that its butt projects into the path of the shoe 123, the shoe will be elevated thereby, thus depressing the detent 119 from engagement withv the pin 122 and thereby through the action of the sprin 123, the driving belt will be shifted to the loose pulley 7 stopping the apparatus.'

When the waste is stripped off the clearer it falls into achute 126 and slides into a suitable receptacle placed therebeneath.v The cleaned bobbins are released from the jaws 35, 36 by the cam 38 and dropped into a suitable receptacle placed beneath the position at which they are relased. i Having fully described my invention, what I claim as new and desire to secure by Letters Patent is':

- 1. In an apparatus of the class described, a support for the bobbin to be stripped, a stripper device provided with a pair of yieldingly closed jaws acting when closed substantially to surround theV bobbin barrel, means for giving said stripper device a movement relatively longitudinally land substantially to surroundl the bobbin barrel,

means for 'giving said stripperV device a movement relatively longitudinally and relatively radially of the bobbin barrel to cause the jaws first to engage and'surround the barrel, then to strip the waste thereon, and then to'disengage therefrom, an opener guide located longitudinally of the bobbin geoy at the butt end, a second opener' guide located longitudinally of the bobbin at the tip end and movable radially relatively thereto, the first opener guide being engaged by the jaws as they reach a position opposite the butt end to open the jaws and permit their engagement with the bobbin barrel, and the second opener guide being engaged by the jaws as they reach a position toward the tip end whereby they are opened and held opened as they separate radially from the bobbin barrel.

8. In an apparatus of the class described an intermittently movable carrier to receive, hold, and present in position for stripping the bobbins to be stripped, stripping means for stripping the waste from the bobbin, a hopper or chute, and means for successively transferring bobbins from the hopperl to the carrier.

4. In an apparatus of the class described an intermittently movable carrier to receive, hold and present in position forv stripping the bobbins to be stripped, strippingmeans for stripping the waste from the bobbin, a hopper or chute, and means acting synchronously with the stripping of a bobbin to transfer an unstripped bobbin from the hopper to the carriage.

5. In an apparatus of the class described an intermittently movable carrier to receive, hold, and present in position for stripping the bobbins to be stripped, stripping means for stripping the waste from the bobbin, a hopper or chute, means for intermittently moving said carrier, and means controlled by or through the means for moving the carrier for successively transferring bobbins from the hopper to the carrier.

6. In an apparatus of the class described, an intermittently movable carrier to receive, hold, and present in position for stripping the bobbins to be stripped, a hopper or chute located adjacent said carrier, stripping means for stripping the waste fromthe bobbin, and means for actuating said stripping means, and means controlled by or through the stripper actuating means for.

successively transferring bobbins from the hopper to the carrier.

7. In an apparatus of the class described, an intermittently movable carrier to receive, hold and present in position for stripping the bobbins to be stripped, a hopper or chute located adjacent said carrier, stripping means for stripping the bobbins held in the carrier, a movable gate to retain the lowermost bob-bin in the hopper, said gate moving into position, upon the transfer of a bobbin from the hopper, to support and guide the bobbin in its passage from the hopper to the carrier, and means fo-r successively transferring bobbins from the hopper to the carrier.

rier and guide the butt into the holding de-` vice and the tip onto the tip support, and

means for successively transferring bobbinsv from the hopper to the carrier and tip' support.

9. In an apparatus of the class described an intermittently movable carrier, a series of devices thereon to engage detachably and hold the butts of a plurality of bobbins, a tip support to guide into and hold in stripping position the bobbin tips, a hopper or.

chute located adjacent said carrier and tip support, a movable gate comprising a butt supporting finger and a tip supporting finger to retain the lowermost bobbin inthe hopper, said gate moving into position upon'` the transfer of a bobbin from the hopper to cause the butt supporting finger to support and guide the butt of the bobbin in its passage from the hopper to the holding device on the carrier and to cause the tip supporting finger to supportv and guide the j bobbin tip from the hopper onto the tip support, and means for successively transferring bobbins from the hopper to the ca'rrier and tip support.

l0. In an apparatus of the classdescribed,y

an intermittently rotatable carrier having a series of circularly arranged fixed jaws thereon and a coperating series of movable yieldingly controlled jaws, each pair of jaws being adapted to grasp and hold lthe butt of the bobbin, stripping mechanismA for stripping the waste on the bobbins as they are successively presented to said stripping mechanism by the carrier, combined withmeans to close the pairs of jaws when a bob'- bin butt is inserted therebetween and to increase the closing ,pressure when theyv are brought by the carrier into stripping position.

11. In an apparatus Aof the class described, an intermittently rotatable carrier having a series of circularly arranged fixed jaws thereon, and a coperating series of movable yieldingly controlled jaws, 'each pair `of jaws being adapted to grasp and hold the` butt of the bobbin, stripping mechanism for stripping the waste on the bobbins as they are successively presented to said stripping mechanism by the carrier, a cam for controlling the closing of the pairs of jaws, said cam acting to close the jaws upon the bobbin In testimony whereof, I have signed my butt when inserted, and retain them yieldname to this specification, in the presence of ingly closed until stripping position is tWo subscribing Witnesses.

reached and then to increase the closing ALONZO E. RHOADES. pressure whereby friction on the cam is minimized but the bobbin is firmly held in stripping position.

Witnesses:

ROBERT JAMESON, DANA OsGoOD.

Copies ot this patent may be obtained for ve cents each, by addressngvthe Commissioner of Patents, Washington, D. C. 

